Check this link
http://ufdc.ufl.edu/UF00083179/00010/25j
And search "Name of aquatic plant" and Oudhia in Google you will find useful links. Like this one
Typha Oudhia
http://www.google.com/search?hl=en&source=hp&biw=1016&bih=573&q=typha+oudhia&aq=f&aqi=&aql=&oq=
regards
Pankaj Oudhia